
% PCA

@article{zou06,
author = {Hui Zou and Trevor Hastie and Robert Tibshirani},
title = {Sparse Principal Component Analysis},
journal = {Journal of Computational and Graphical Statistics},
volume = 15,
number = 2,
pages = {265-286},
year  = 2006,
publisher = {Taylor & Francis},
doi = {10.1198/106186006X113430},
URL = {https://doi.org/10.1198/106186006X113430},
eprint = {https://doi.org/10.1198/106186006X113430}
}


@Inbook{Maccone2009,
title="A simple introduction to the KLT (Karhunen-Lo{\`e}ve Transform)",
bookTitle="Deep Space Flight and Communications: Exploiting the Sun as a Gravitational Lens",
year=2009,
publisher="Springer Berlin Heidelberg",
address="Berlin, Heidelberg",
pages="151--179",
isbn="978-3-540-72943-3",
doi="10.1007/978-3-540-72943-3_10",
url="https://doi.org/10.1007/978-3-540-72943-3_10"
}


@inproceedings{Kim2008SparseNM,
  title={Sparse Nonnegative Matrix Factorization for Clustering},
  author={Jingu Kim and Haesun Park},
  year={2008} 
}

